LM117HVGWRLQMLV [TI]

耐辐射 QMLV、4.2V 至 60V 输入、500mA 可调输出线性稳压器 | NAC | 16 | -55 to 125;
LM117HVGWRLQMLV
型号: LM117HVGWRLQMLV
厂家: TEXAS INSTRUMENTS    TEXAS INSTRUMENTS
描述:

耐辐射 QMLV、4.2V 至 60V 输入、500mA 可调输出线性稳压器 | NAC | 16 | -55 to 125

CD 输出元件 稳压器 调节器
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LM117, LM317-N  
www.ti.com  
SNVS774L MAY 2004REVISED FEBRUARY 2011  
LM117/LM317A/LM317-N 3-Terminal Adjustable Regulator  
Check for Samples: LM117, LM317-N  
Normally, no capacitors are needed unless the device  
1
FEATURES  
is situated more than 6 inches from the input filter  
capacitors in which case an input bypass is needed.  
An optional output capacitor can be added to improve  
transient response. The adjustment terminal can be  
bypassed to achieve very high ripple rejection ratios  
which are difficult to achieve with standard 3-terminal  
regulators.  
2
Specified 1% Output Voltage Tolerance  
(LM317A)  
Specified Max. 0.01%/V Line Regulation  
(LM317A)  
Specified Max. 0.3% Load Regulation (LM117)  
Specified 1.5A Output Current  
Besides replacing fixed regulators, the LM117 is  
useful in a wide variety of other applications. Since  
the regulator is “floating” and sees only the input-to-  
output differential voltage, supplies of several  
hundred volts can be regulated as long as the  
maximum input to output differential is not exceeded,  
i.e., avoid short-circuiting the output.  
Adjustable Output Down to 1.2V  
Current Limit Constant With Temperature  
P+ Product Enhancement Tested  
80 dB Ripple Rejection  
Output is Short-Circuit Protected  
Also, it makes an especially simple adjustable  
switching regulator, a programmable output regulator,  
or by connecting a fixed resistor between the  
adjustment pin and output, the LM117 can be used  
DESCRIPTION  
The LM117 series of adjustable 3-terminal positive  
voltage regulators is capable of supplying in excess  
of 1.5A over a 1.2V to 37V output range. They are  
exceptionally easy to use and require only two  
external resistors to set the output voltage. Further,  
both line and load regulation are better than standard  
fixed regulators. Also, the LM117 is packaged in  
standard transistor packages which are easily  
mounted and handled.  
as  
a precision current regulator. Supplies with  
electronic shutdown can be achieved by clamping the  
adjustment terminal to ground which programs the  
output to 1.2V where most loads draw little current.  
For applications requiring greater output current, see  
LM150 series (3A) and LM138 series (5A) data  
sheets. For the negative complement, see LM137  
series data sheet.  
In addition to higher performance than fixed  
regulators, the LM117 series offers full overload  
protection available only in IC's. Included on the chip  
are current limit, thermal overload protection and safe  
area protection. All overload protection circuitry  
remains fully functional even if the adjustment  
terminal is disconnected.  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
All trademarks are the property of their respective owners.  
2
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2004–2011, Texas Instruments Incorporated  
LM117, LM317-N  
SNVS774L MAY 2004REVISED FEBRUARY 2011  
www.ti.com  
Typical Applications  
Figure 1. 1.2V–25V Adjustable Regulator  
LM117/LM317A/LM317-N Package Options  
Output  
Current  
Part Number  
Suffix  
Package  
LM117, LM317-N  
LM317A, LM317-N  
LM317-N  
NDS  
NDE  
KTT  
DCY  
NDT  
NAJ  
NDP  
TO-3  
TO-220  
TO-263  
SOT-223  
TO  
1.5A  
1.5A  
1.5A  
1.0A  
0.5A  
0.5A  
0.5A  
LM317A, LM317-N  
LM117, LM317A, LM317-N  
LM117  
LCCC  
PFM  
LM317A, LM317-N  
Full output current not available at high  
input-output voltages  
SOT-223 vs. PFM Packages  
*Needed if device is more than 6 inches  
from filter capacitors.  
†Optional—improves transient response.  
Output capacitors in the range of 1μF to  
1000μF of aluminum or tantalum  
electrolytic are commonly used to provide  
improved output impedance and rejection  
of transients.  
Figure 2. Scale 1:1  
Connection Diagrams  
TO-3 (NDS)  
Metal Can Package  
Figure 5. TO-263 (KTT)  
Surface-Mount Package  
Figure 6. Top View  
CASE IS OUTPUT  
Figure 3. Bottom View  
Bottom View  
Package Number NDS or K  
TO-263 (KTT)  
Surface-Mount Package  
TO (NDT)  
Metal Can Package  
Figure 7. Side View  
Package Number KTT  
CASE IS OUTPUT  
Figure 4. Bottom View  
Package Number NDT  
2
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SNVS774L MAY 2004REVISED FEBRUARY 2011  
TO-220 (NDE)  
Plastic Package  
4-Lead SOT-223 (DCY)  
Figure 10. Front View  
Package Number DCY  
PFM (NDP)  
Figure 8. Front View  
Package Number NDE  
Figure 11. Front View  
Package Number NDP  
Ceramic Leadless Chip Carrier (NAJ)  
Figure 9. Top View  
Package Number NAJ  
Copyright © 2004–2011, Texas Instruments Incorporated  
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LM117, LM317-N  
SNVS774L MAY 2004REVISED FEBRUARY 2011  
www.ti.com  
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam  
during storage or handling to prevent electrostatic damage to the MOS gates.  
Absolute Maximum Ratings(1)(2)  
Power Dissipation  
Internally Limited  
+40V, 0.3V  
65°C to +150°C  
300°C  
Input-Output Voltage Differential  
Storage Temperature  
Lead Temperature  
Metal Package (Soldering, 10 seconds)  
Plastic Package (Soldering, 4 seconds)  
260°C  
(3)  
ESD Tolerance  
3 kV  
(1) Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for  
which the device is intended to be functional, but do not ensure specific performance limits. For ensured specifications and test  
conditions, see the Electrical Characteristics. The ensured specifications apply only for the test conditions listed.  
(2) If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/Distributors for availability and  
specifications.  
(3) Human body model, 100 pF discharged through a 1.5 kΩ resistor.  
Operating Temperature Range  
LM117  
55°C TJ +150°C  
40°C TJ +125°C  
0°C TJ +125°C  
LM317A  
LM317-N  
Preconditioning  
Thermal Limit Burn-In  
All Devices 100%  
LM117 Electrical Characteristics(1)  
Specifications with standard type face are for TJ = 25°C, and those with boldface type apply over full Operating  
Temperature Range. Unless otherwise specified, VIN VOUT = 5V, and IOUT = 10 mA.  
(2)  
LM117  
Parameter  
Reference Voltage  
Conditions  
Min  
Typ  
Max  
1.30  
Units  
3V (VIN VOUT) 40V,  
1.20  
1.25  
V
(1)  
10 mA IOUT IMAX  
0.01  
0.02  
0.02  
0.05  
(3)  
Line Regulation  
Load Regulation  
3V (VIN VOUT) 40V  
%/V  
%
0.1  
0.3  
0.3  
1
(1) (3)  
10 mA IOUT IMAX  
Thermal Regulation  
20 ms Pulse  
0.03  
0.07  
%/W  
Adjustment Pin Current  
50  
100  
μA  
(1)  
10 mA IOUT IMAX  
Adjustment Pin Current Change  
0.2  
5
μA  
3V (VIN VOUT) 40V  
Temperature Stability  
Minimum Load Current  
T
MIN TJ TMAX  
1
3.5  
%
(VIN VOUT) = 40V  
5
mA  
NDS Package  
1.5  
0.5  
2.2  
3.4  
1.8  
(VIN VOUT) 15V  
A
NDT, NAJ Package  
NDS Package  
0.8  
Current Limit  
0.3  
0.4  
(VIN VOUT) = 40V  
10 Hz f 10 kHz  
A
NDT, NAJ Package  
0.15  
0.20  
0.003  
RMS Output Noise, % of VOUT  
%
(1) IMAX = 1.5A for the NDS (TO-3), NDE (TO-220), and KTT (TO-263) packages. IMAX = 1.0A for the DCY (SOT-223) package. IMAX = 0.5A  
for the NDT (TO), MDT (PFM), and NAJ (LCCC) packages. Device power dissipation (PD) is limited by ambient temperature (TA), device  
maximum junction temperature (TJ), and package thermal resistance (θJA). The maximum allowable power dissipation at any  
temperature is : PD(MAX) = ((TJ(MAX) - TA)/θJA). All Min. and Max. limits are ensured to TI's Average Outgoing Quality Level (AOQL).  
(2) Refer to RETS117H drawing for the LM117H, or the RETS117K for the LM117K military specifications.  
(3) Regulation is measured at a constant junction temperature, using pulse testing with a low duty cycle. Changes in output voltage due to  
heating effects are covered under the specifications for thermal regulation.  
4
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SNVS774L MAY 2004REVISED FEBRUARY 2011  
LM117 Electrical Characteristics(1) (continued)  
Specifications with standard type face are for TJ = 25°C, and those with boldface type apply over full Operating  
Temperature Range. Unless otherwise specified, VIN VOUT = 5V, and IOUT = 10 mA.  
(2)  
LM117  
Parameter  
Conditions  
Min  
66  
Typ  
65  
80  
0.3  
2
Max  
Units  
dB  
VOUT = 10V, f = 120 Hz, CADJ = 0 μF  
VOUT = 10V, f = 120 Hz, CADJ = 10 μF  
TJ = 125°C, 1000 hrs  
Ripple Rejection Ratio  
Long-Term Stability  
dB  
1
%
NDS (TO-3) Package  
Thermal Resistance, θJC  
Junction-to-Case  
NDT (TO) Package  
21  
12  
39  
186  
88  
°C/W  
°C/W  
NAJ (LCCC) Package  
NDS (TO-3) Package  
Thermal Resistance, θJA  
Junction-to-Ambient  
(No Heat Sink)  
NDT (TO) Package  
NAJ (LCCC) Package  
LM317A and LM317-N Electrical Characteristics(1)  
Specifications with standard type face are for TJ = 25°C, and those with boldface type apply over full Operating  
Temperature Range. Unless otherwise specified, VIN VOUT = 5V, and IOUT = 10 mA.  
LM317A  
Typ  
LM317-N  
Typ  
Parameter  
Conditions  
Min  
Max  
Min  
Max  
Units  
1.238 1.250 1.262  
-
1.25  
-
V
Reference Voltage  
3V (VIN VOUT) 40V,  
10 mA IOUT IMAX  
1.225 1.250 1.270 1.20  
1.25  
1.30  
V
%/V  
%
(1)  
0.005 0.01  
0.01  
0.02  
0.04  
0.07  
(2)  
Line Regulation  
Load Regulation  
3V (VIN VOUT) 40V  
0.01  
0.02  
0.1  
0.5  
0.1  
0.3  
0.5  
1.5  
(1) (2)  
10 mA IOUT IMAX  
0.3  
1
Thermal Regulation  
20 ms Pulse  
0.04  
0.07  
0.04  
0.07  
%/W  
Adjustment Pin Current  
50  
100  
50  
100  
μA  
(1)  
Adjustment Pin Current  
Change  
10 mA IOUT IMAX  
0.2  
5
0.2  
5
μA  
3V (VIN VOUT) 40V  
Temperature Stability  
Minimum Load Current  
T
MIN TJ TMAX  
1
3.5  
-
1
%
(VIN VOUT) = 40V  
10  
-
3.5  
2.2  
2.2  
0.8  
0.40  
10  
3.4  
3.4  
1.8  
mA  
NDS, KTT Packages  
DCY, NDE Packages  
NDT, MDT Packages  
NDS, KTT Packages  
DCY, NDE Packages  
NDT, MDT Packages  
-
1.5  
1.5  
(VIN VOUT) 15V  
1.5  
0.5  
-
2.2  
0.8  
-
3.4  
1.8  
A
0.5  
Current Limit  
0.15  
(VIN VOUT) = 40V  
10 Hz f 10 kHz  
0.112 0.30  
0.075 0.20  
0.112 0.30  
0.075 0.20  
A
RMS Output Noise, % of  
VOUT  
0.003  
0.003  
%
VOUT = 10V, f = 120 Hz, CADJ = 0 μF  
VOUT = 10V, f = 120 Hz, CADJ = 10 μF  
TJ = 125°C, 1000 hrs  
65  
65  
dB  
dB  
%
Ripple Rejection Ratio  
Long-Term Stability  
66  
80  
66  
80  
0.3  
1
0.3  
1
(1) IMAX = 1.5A for the NDS (TO-3), NDE (TO-220), and KTT (TO-263) packages. IMAX = 1.0A for the DCY (SOT-223) package. IMAX = 0.5A  
for the NDT (TO), MDT (PFM), and NAJ (LCCC) packages. Device power dissipation (PD) is limited by ambient temperature (TA), device  
maximum junction temperature (TJ), and package thermal resistance (θJA). The maximum allowable power dissipation at any  
temperature is : PD(MAX) = ((TJ(MAX) - TA)/θJA). All Min. and Max. limits are ensured to TI's Average Outgoing Quality Level (AOQL).  
(2) Regulation is measured at a constant junction temperature, using pulse testing with a low duty cycle. Changes in output voltage due to  
heating effects are covered under the specifications for thermal regulation.  
Copyright © 2004–2011, Texas Instruments Incorporated  
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SNVS774L MAY 2004REVISED FEBRUARY 2011  
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LM317A and LM317-N Electrical Characteristics(1) (continued)  
Specifications with standard type face are for TJ = 25°C, and those with boldface type apply over full Operating  
Temperature Range. Unless otherwise specified, VIN VOUT = 5V, and IOUT = 10 mA.  
LM317A  
LM317-N  
Typ  
2
Parameter  
Conditions  
Min  
Typ  
-
Max  
Min  
Max  
Units  
NDS (TO-3) Package  
NDE (TO-220) Package  
KTT (TO-263) Package  
DCY (SOT-223) Package  
NDT (TO) Package  
4
4
-
4
Thermal Resistance, θJC  
Junction-to-Case  
°C/W  
23.5  
21  
12  
-
23.5  
21  
MDT (PFM) Package  
NDS (TO-3) Package  
NDE (TO-220) Package  
12  
39  
50  
-
50  
(3)  
Thermal Resistance, θJA  
Junction-to-Ambient (No  
Heat Sink)  
KTT (TO-263) Package  
DCY (SOT-223) Package  
NDT (TO) Package  
50  
°C/W  
(3)  
140  
186  
103  
140  
186  
103  
(3)  
MDT (PFM) Package  
(3) When surface mount packages are used (TO-263, SOT-223, PFM), the junction to ambient thermal resistance can be reduced by  
increasing the PC board copper area that is thermally connected to the package. See the Applications Hints section for heatsink  
techniques.  
6
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SNVS774L MAY 2004REVISED FEBRUARY 2011  
Typical Performance Characteristics  
Output Capacitor = 0 μF unless otherwise noted  
Load Regulation  
Current Limit  
Figure 12.  
Figure 13.  
Adjustment Current  
Dropout Voltage  
Figure 14.  
Figure 15.  
VOUT vs VIN, VOUT = VREF  
VOUT vs VIN, VOUT = 5V  
Figure 16.  
Figure 17.  
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Typical Performance Characteristics (continued)  
Output Capacitor = 0 μF unless otherwise noted  
Temperature Stability  
Minimum Operating Current  
Figure 18.  
Figure 19.  
Ripple Rejection  
Ripple Rejection  
Figure 20.  
Figure 21.  
Ripple Rejection  
Output Impedance  
Figure 22.  
Figure 23.  
8
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Typical Performance Characteristics (continued)  
Output Capacitor = 0 μF unless otherwise noted  
Line Transient Response  
Load Transient Response  
Figure 24.  
Figure 25.  
APPLICATION HINTS  
In operation, the LM117 develops a nominal 1.25V reference voltage, VREF, between the output and adjustment  
terminal. The reference voltage is impressed across program resistor R1 and, since the voltage is constant, a  
constant current I1 then flows through the output set resistor R2, giving an output voltage of  
(1)  
Since the 100μA current from the adjustment terminal represents an error term, the LM117 was designed to  
minimize IADJ and make it very constant with line and load changes. To do this, all quiescent operating current is  
returned to the output establishing a minimum load current requirement. If there is insufficient load on the output,  
the output will rise.  
External Capacitors  
An input bypass capacitor is recommended. A 0.1μF disc or 1μF solid tantalum on the input is suitable input  
bypassing for almost all applications. The device is more sensitive to the absence of input bypassing when  
adjustment or output capacitors are used but the above values will eliminate the possibility of problems.  
The adjustment terminal can be bypassed to ground on the LM117 to improve ripple rejection. This bypass  
capacitor prevents ripple from being amplified as the output voltage is increased. With a 10 μF bypass capacitor  
80dB ripple rejection is obtainable at any output level. Increases over 10 μF do not appreciably improve the  
ripple rejection at frequencies above 120Hz. If the bypass capacitor is used, it is sometimes necessary to include  
protection diodes to prevent the capacitor from discharging through internal low current paths and damaging the  
device.  
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In general, the best type of capacitors to use is solid tantalum. Solid tantalum capacitors have low impedance  
even at high frequencies. Depending upon capacitor construction, it takes about 25 μF in aluminum electrolytic to  
equal 1μF solid tantalum at high frequencies. Ceramic capacitors are also good at high frequencies; but some  
types have a large decrease in capacitance at frequencies around 0.5 MHz. For this reason, 0.01 μF disc may  
seem to work better than a 0.1 μF disc as a bypass.  
Although the LM117 is stable with no output capacitors, like any feedback circuit, certain values of external  
capacitance can cause excessive ringing. This occurs with values between 500 pF and 5000 pF. A 1 μF solid  
tantalum (or 25 μF aluminum electrolytic) on the output swamps this effect and insures stability. Any increase of  
the load capacitance larger than 10 μF will merely improve the loop stability and output impedance.  
Load Regulation  
The LM117 is capable of providing extremely good load regulation but a few precautions are needed to obtain  
maximum performance. The current set resistor connected between the adjustment terminal and the output  
terminal (usually 240Ω) should be tied directly to the output (case) of the regulator rather than near the load. This  
eliminates line drops from appearing effectively in series with the reference and degrading regulation. For  
example, a 15V regulator with 0.05Ω resistance between the regulator and load will have a load regulation due to  
line resistance of 0.05Ω × IL. If the set resistor is connected near the load the effective line resistance will be  
0.05Ω (1 + R2/R1) or in this case, 11.5 times worse.  
Figure 26 shows the effect of resistance between the regulator and 240Ω set resistor.  
Figure 26. Regulator with Line Resistance in Output Lead  
With the TO-3 package, it is easy to minimize the resistance from the case to the set resistor, by using two  
separate leads to the case. However, with the TO package, care should be taken to minimize the wire length of  
the output lead. The ground of R2 can be returned near the ground of the load to provide remote ground sensing  
and improve load regulation.  
Protection Diodes  
When external capacitors are used with any IC regulator it is sometimes necessary to add protection diodes to  
prevent the capacitors from discharging through low current points into the regulator. Most 10 μF capacitors have  
low enough internal series resistance to deliver 20A spikes when shorted. Although the surge is short, there is  
enough energy to damage parts of the IC.  
When an output capacitor is connected to a regulator and the input is shorted, the output capacitor will discharge  
into the output of the regulator. The discharge current depends on the value of the capacitor, the output voltage  
of the regulator, and the rate of decrease of VIN. In the LM117, this discharge path is through a large junction that  
is able to sustain 15A surge with no problem. This is not true of other types of positive regulators. For output  
capacitors of 25 μF or less, there is no need to use diodes.  
The bypass capacitor on the adjustment terminal can discharge through a low current junction. Discharge occurs  
when either the input, or the output, is shorted. Internal to the LM117 is a 50Ω resistor which limits the peak  
discharge current. No protection is needed for output voltages of 25V or less and 10 μF capacitance. Figure 27  
shows an LM117 with protection diodes included for use with outputs greater than 25V and high values of output  
capacitance.  
10  
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D1 protects against C1  
D2 protects against C2  
Figure 27. Regulator with Protection Diodes  
Heatsink Requirements  
The LM317-N regulators have internal thermal shutdown to protect the device from over-heating. Under all  
operating conditions, the junction temperature of the LM317-N should not exceed the rated maximum junction  
temperature (TJ) of 150°C for the LM117, or 125°C for the LM317A and LM317-N. A heatsink may be required  
depending on the maximum device power dissipation and the maximum ambient temperature of the application.  
To determine if a heatsink is needed, the power dissipated by the regulator, PD, must be calculated:  
PD = ((VIN VOUT) × IL) + (VIN × IG)  
(2)  
Figure 28 shows the voltage and currents which are present in the circuit.  
The next parameter which must be calculated is the maximum allowable temperature rise, TR(MAX)  
:
TR(MAX) = TJ(MAX) TA(MAX)  
(3)  
where TJ(MAX) is the maximum allowable junction temperature (150°C for the LM117, or 125°C for the  
LM317A/LM317-N), and TA(MAX) is the maximum ambient temperature which will be encountered in the  
application.  
Using the calculated values for TR(MAX) and PD, the maximum allowable value for the junction-to-ambient thermal  
resistance (θJA) can be calculated:  
θJA = (TR(MAX) / PD)  
(4)  
Figure 28. Power Dissipation Diagram  
If the calculated maximum allowable thermal resistance is higher than the actual package rating, then no  
additional work is needed. If the calculated maximum allowable thermal resistance is lower than the actual  
package rating either the power dissipation (PD) needs to be reduced, the maximum ambient temperature TA(MAX)  
needs to be reduced, the thermal resistance (θJA) must be lowered by adding a heatsink, or some combination of  
these.  
If a heatsink is needed, the value can be calculated from the formula:  
θHA (θJA - (θCH + θJC))  
(5)  
11  
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where (θCH is the thermal resistance of the contact area between the device case and the heatsink surface, and  
θJC is thermal resistance from the junction of the die to surface of the package case.  
When a value for θ(HA) is found using the equation shown, a heatsink must be selected that has a value that is  
less than, or equal to, this number.  
The θ(HA) rating is specified numerically by the heatsink manufacturer in the catalog, or shown in a curve that  
plots temperature rise vs power dissipation for the heatsink.  
Heatsinking Surface Mount Packages  
The TO-263 (KTT), SOT-223 (DCY) and PFM (MDT) packages use a copper plane on the PCB and the PCB  
itself as a heatsink. To optimize the heat sinking ability of the plane and PCB, solder the tab of the package to  
the plane.  
Heatsinking the SOT-223 Package  
Figure 29 and Figure 30 show the information for the SOT-223 package. Figure 30 assumes a θ(JA) of 74°C/W  
for 1 ounce copper and 51°C/W for 2 ounce copper and a maximum junction temperature of 125°C. Please see  
AN-1028 (literature number SNVA036) for thermal enhancement techniques to be used with SOT-223 and PFM  
packages.  
Figure 29. θ(JA) vs Copper (2 ounce) Area for the SOT-223 Package  
Figure 30. Maximum Power Dissipation vs TAMB for the SOT-223 Package  
Heatsinking the TO-263 Package  
Figure 31 shows for the TO-263 the measured values of θ(JA) for different copper area sizes using a typical PCB  
with 1 ounce copper and no solder mask over the copper area used for heatsinking.  
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As shown in Figure 31, increasing the copper area beyond 1 square inch produces very little improvement. It  
should also be observed that the minimum value of θ(JA) for the TO-263 package mounted to a PCB is 32°C/W.  
Figure 31. θ(JA) vs Copper (1 ounce) Area for the TO-263 Package  
As a design aid, Figure 32 shows the maximum allowable power dissipation compared to ambient temperature  
for the TO-263 device (assuming θ(JA) is 35°C/W and the maximum junction temperature is 125°C).  
Figure 32. Maximum Power Dissipation vs TAMB for the TO-263 Package  
Heatsinking the PFM Package  
If the maximum allowable value for θJA is found to be 103°C/W (Typical Rated Value) for PFM package, no  
heatsink is needed since the package alone will dissipate enough heat to satisfy these requirements. If the  
calculated value for θJA falls below these limits, a heatsink is required.  
As a design aid, Table 1 shows the value of the θJA of PFM for different heatsink area. The copper patterns that  
we used to measure these θJAs are shown in Figure 37. Figure 33 reflects the same test results as what are in  
Table 1.  
Figure 34 shows the maximum allowable power dissipation vs. ambient temperature for the PFM device.  
Figure 35 shows the maximum allowable power dissipation vs. copper area (in2) for the PFM device. Please see  
AN-1028 (literature number SNVA036) for thermal enhancement techniques to be used with SOT-223 and PFM  
packages.  
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Table 1. θJA Different Heatsink Area  
Layout  
Copper Area  
Thermal Resistance  
Top Side (in2)(1)  
0.0123  
Bottom Side (in2)  
(θJA°C/W) PFM  
1
2
0
0
103  
87  
60  
54  
52  
47  
84  
70  
63  
57  
57  
89  
72  
61  
55  
53  
0.066  
0.3  
3
0
4
0.53  
0
5
0.76  
0
6
1.0  
0
7
0.066  
0.066  
0.066  
0.066  
0.066  
0.066  
0.175  
0.284  
0.392  
0.5  
0.2  
0.4  
0.6  
0.8  
1.0  
0.066  
0.175  
0.284  
0.392  
0.5  
8
9
10  
11  
12  
13  
14  
15  
16  
(1) Tab of device attached to topside of copper.  
Figure 33. θJA vs 2oz Copper Area for PFM  
Figure 34. Maximum Allowable Power Dissipation vs. Ambient Temperature for PFM  
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Figure 35. Maximum Allowable Power Dissipation vs. 2oz Copper Area for PFM  
Figure 36. Top View of the Thermal Test Pattern in Actual Scale  
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Figure 37. Bottom View of the Thermal Test Pattern in Actual Scale  
Schematic Diagram  
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SNVS774L MAY 2004REVISED FEBRUARY 2011  
Typical Applications  
Note: Min.  
output  
1.2V  
Figure 38. 5V Logic Regulator with Electronic Shutdown  
Figure 39. Slow Turn-On 15V Regulator  
Figure 40.  
†Solid tantalum  
*Discharges C1 if output is shorted to ground  
Figure 41. Adjustable Regulator with Improved Ripple Rejection  
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Figure 42. High Stability 10V Regulator  
‡Optional—improves ripple rejection  
†Solid tantalum  
*Minimum load current = 30 mA  
Figure 43. High Current Adjustable Regulator  
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SNVS774L MAY 2004REVISED FEBRUARY 2011  
Full output current not available at high input-output voltages  
Figure 44. 0 to 30V Regulator  
Figure 45. Power Follower  
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†Solid tantalum  
*Lights in constant current mode  
Figure 46. 5A Constant Voltage/Constant Current Regulator  
Figure 47. 1A Current Regulator  
*Minimum load current 4 mA  
Figure 48. 1.2V–20V Regulator with Minimum Program Current  
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Figure 49. High Gain Amplifier  
†Solid tantalum  
*Core—Arnold A-254168-2 60 turns  
Figure 50. Low Cost 3A Switching Regulator  
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†Solid tantalum  
*Core—Arnold A-254168-2 60 turns  
Figure 51. 4A Switching Regulator with Overload Protection  
Figure 52. Precision Current Limiter  
Figure 53. Tracking Preregulator  
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(Compared to LM117's higher current limit)  
—At 50 mA output only ¾ volt of drop occurs in R3 and R4  
Figure 54. Current Limited Voltage Regulator  
Note: All outputs within ±100 mV  
†Minimum load—10 mA  
Figure 55. Adjusting Multiple On-Card Regulators with Single Control  
Figure 56. AC Voltage Regulator  
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Use of RS allows low charging rates with fully charged battery.  
Figure 57. 12V Battery Charger  
Figure 58.  
Figure 59. 50mA Constant Current Battery Charger  
Figure 60. Adjustable 4A Regulator  
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*Sets peak current (0.6A for 1Ω)  
**The 1000μF is recommended to filter out input transients  
Figure 61. Current Limited 6V Charger  
*Sets maximum VOUT  
Figure 62. Digitally Selected Outputs  
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PACKAGE OPTION ADDENDUM  
www.ti.com  
29-May-2013  
PACKAGING INFORMATION  
Orderable Device  
LM117H  
Status Package Type Package Pins Package  
Eco Plan Lead/Ball Finish  
MSL Peak Temp  
Op Temp (°C)  
-55 to 125  
-55 to 125  
-55 to 125  
-55 to 125  
-55 to 125  
Device Marking  
Samples  
Drawing  
Qty  
(1)  
(2)  
(3)  
(4/5)  
ACTIVE  
TO  
TO  
NDT  
3
3
2
2
2
500  
Green (RoHS POST-PLATE  
& no Sb/Br)  
Level-1-NA-UNLIM  
Level-1-NA-UNLIM  
Call TI  
LM117HP+  
LM117H/NOPB  
LM117K  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
NDT  
NDS  
NDS  
NDS  
500  
50  
Green (RoHS POST-PLATE  
& no Sb/Br)  
LM117HP+  
TO-3  
TO-3  
TO-3  
TBD  
Call TI  
LM117K  
STEELP+  
LM117K STEEL  
LM117K STEEL/NOPB  
50  
TBD  
Call TI  
Call TI  
LM117K  
STEELP+  
50  
Green (RoHS POST-PLATE  
& no Sb/Br)  
Level-1-NA-UNLIM  
LM117K  
STEELP+  
LM317AEMP  
ACTIVE  
ACTIVE  
SOT-223  
SOT-223  
DCY  
DCY  
4
4
1000  
1000  
TBD  
Call TI  
Call TI  
-40 to 125  
-40 to 125  
N07A  
LM317AEMP/NOPB  
Green (RoHS  
& no Sb/Br)  
CU SN  
Level-1-260C-UNLIM  
N07A  
LM317AEMPX  
ACTIVE  
ACTIVE  
SOT-223  
SOT-223  
DCY  
DCY  
4
4
2000  
2000  
TBD  
Call TI  
CU SN  
Call TI  
N07A  
N07A  
LM317AEMPX/NOPB  
Green (RoHS  
& no Sb/Br)  
Level-1-260C-UNLIM  
-40 to 125  
-40 to 125  
-40 to 125  
-40 to 125  
-40 to 125  
-40 to 125  
-40 to 125  
LM317AH  
LM317AH/NOPB  
LM317AMDT  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
TO  
NDT  
NDT  
NDP  
NDP  
NDP  
NDP  
3
3
3
3
3
3
500  
500  
75  
Green (RoHS POST-PLATE  
& no Sb/Br)  
Level-1-NA-UNLIM  
Level-1-NA-UNLIM  
Call TI  
LM317AHP+  
LM317AHP+  
TO  
Green (RoHS POST-PLATE  
& no Sb/Br)  
TO-252  
TO-252  
TO-252  
TO-252  
TBD  
Call TI  
CU SN  
Call TI  
CU SN  
LM317  
AMDT  
LM317AMDT/NOPB  
LM317AMDTX  
75  
Green (RoHS  
& no Sb/Br)  
Level-2-260C-1 YEAR  
Call TI  
LM317  
AMDT  
2500  
2500  
TBD  
LM317  
AMDT  
LM317AMDTX/NOPB  
Green (RoHS  
& no Sb/Br)  
Level-2-260C-1 YEAR  
LM317  
AMDT  
LM317AT  
ACTIVE  
ACTIVE  
TO-220  
TO-220  
NDE  
NDE  
3
3
45  
45  
TBD  
Call TI  
CU SN  
Call TI  
-40 to 125  
-40 to 125  
LM317AT P+  
LM317AT/NOPB  
Pb-Free (RoHS  
Exempt)  
Level-1-NA-UNLIM  
LM317AT P+  
LM317EMP  
ACTIVE  
SOT-223  
DCY  
4
1000  
TBD  
Call TI  
Call TI  
0 to 125  
N01A  
Addendum-Page 1  
PACKAGE OPTION ADDENDUM  
www.ti.com  
29-May-2013  
Orderable Device  
Status Package Type Package Pins Package  
Eco Plan Lead/Ball Finish  
MSL Peak Temp  
Op Temp (°C)  
0 to 125  
0 to 125  
0 to 125  
0 to 125  
0 to 125  
0 to 125  
0 to 125  
0 to 125  
0 to 125  
0 to 125  
Device Marking  
Samples  
Drawing  
Qty  
(1)  
(2)  
(3)  
(4/5)  
LM317EMP/NOPB  
LM317EMPX/NOPB  
LM317H  
ACTIVE  
SOT-223  
SOT-223  
TO  
DCY  
4
4
3
3
2
2
3
3
3
3
1000  
Green (RoHS  
& no Sb/Br)  
CU SN  
CU SN  
Level-1-260C-UNLIM  
Level-1-260C-UNLIM  
Level-1-NA-UNLIM  
Level-1-NA-UNLIM  
Call TI  
N01A  
N01A  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
DCY  
NDT  
NDT  
NDS  
NDS  
NDP  
NDP  
KTT  
KTT  
2000  
500  
500  
50  
Green (RoHS  
& no Sb/Br)  
Green (RoHS POST-PLATE  
& no Sb/Br)  
LM317HP+  
LM317HP+  
LM317H/NOPB  
TO  
Green (RoHS POST-PLATE  
& no Sb/Br)  
LM317K STEEL  
LM317K STEEL/NOPB  
LM317MDT/NOPB  
LM317MDTX/NOPB  
LM317S/NOPB  
TO-3  
TBD  
Call TI  
LM317K  
STEELP+  
TO-3  
50  
Green (RoHS POST-PLATE  
& no Sb/Br)  
Level-1-NA-UNLIM  
Level-2-260C-1 YEAR  
Level-2-260C-1 YEAR  
Level-3-245C-168 HR  
Level-3-245C-168 HR  
LM317K  
STEELP+  
TO-252  
TO-252  
75  
Green (RoHS  
& no Sb/Br)  
CU SN  
CU SN  
CU SN  
CU SN  
LM317  
MDT  
2500  
45  
Green (RoHS  
& no Sb/Br)  
LM317  
MDT  
DDPAK/  
TO-263  
Pb-Free (RoHS  
Exempt)  
LM317S  
P+  
LM317SX/NOPB  
DDPAK/  
TO-263  
500  
Pb-Free (RoHS  
Exempt)  
LM317S  
P+  
LM317T  
ACTIVE  
ACTIVE  
TO-220  
NDE  
NDG  
3
3
45  
45  
TBD  
Call TI  
CU SN  
Call TI  
LM317T P+  
LM317T/LF01  
TO-220  
Pb-Free (RoHS  
Exempt)  
Level-4-260C-72 HR  
LM317T P+  
LM317T/NOPB  
ACTIVE  
TO-220  
NDE  
3
45  
Green (RoHS  
& no Sb/Br)  
CU SN  
Level-1-NA-UNLIM  
0 to 125  
LM317T P+  
(1) The marketing status values are defined as follows:  
ACTIVE: Product device recommended for new designs.  
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.  
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.  
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.  
OBSOLETE: TI has discontinued the production of the device.  
(2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability  
information and additional product content details.  
TBD: The Pb-Free/Green conversion plan has not been defined.  
Addendum-Page 2  
PACKAGE OPTION ADDENDUM  
www.ti.com  
29-May-2013  
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that  
lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.  
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between  
the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above.  
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight  
in homogeneous material)  
(3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.  
(4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device.  
(5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation  
of the previous line and the two combined represent the entire Device Marking for that device.  
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information  
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and  
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.  
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.  
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.  
Addendum-Page 3  
PACKAGE MATERIALS INFORMATION  
www.ti.com  
29-May-2013  
TAPE AND REEL INFORMATION  
*All dimensions are nominal  
Device  
Package Package Pins  
Type Drawing  
SPQ  
Reel  
Reel  
A0  
B0  
K0  
P1  
W
Pin1  
Diameter Width (mm) (mm) (mm) (mm) (mm) Quadrant  
(mm) W1 (mm)  
LM317AEMP  
LM317AEMP/NOPB  
LM317AEMPX  
SOT-223  
SOT-223  
SOT-223  
DCY  
DCY  
DCY  
DCY  
NDP  
NDP  
DCY  
DCY  
DCY  
NDP  
KTT  
4
4
4
4
3
3
4
4
4
3
3
1000  
1000  
2000  
2000  
2500  
2500  
1000  
1000  
2000  
2500  
500  
330.0  
330.0  
330.0  
330.0  
330.0  
330.0  
330.0  
330.0  
330.0  
330.0  
330.0  
16.4  
16.4  
16.4  
16.4  
16.4  
16.4  
16.4  
16.4  
16.4  
16.4  
24.4  
7.0  
7.0  
7.0  
7.0  
6.9  
6.9  
7.0  
7.0  
7.0  
6.9  
7.5  
7.5  
2.2  
2.2  
2.2  
2.2  
2.7  
2.7  
2.2  
2.2  
2.2  
2.7  
5.0  
12.0  
12.0  
12.0  
12.0  
8.0  
16.0  
16.0  
16.0  
16.0  
16.0  
16.0  
16.0  
16.0  
16.0  
16.0  
24.0  
Q3  
Q3  
Q3  
Q3  
Q2  
Q2  
Q3  
Q3  
Q3  
Q2  
Q2  
7.5  
LM317AEMPX/NOPB SOT-223  
7.5  
LM317AMDTX  
LM317AMDTX/NOPB  
LM317EMP  
TO-252  
TO-252  
10.5  
10.5  
7.5  
8.0  
SOT-223  
SOT-223  
SOT-223  
TO-252  
12.0  
12.0  
12.0  
8.0  
LM317EMP/NOPB  
LM317EMPX/NOPB  
LM317MDTX/NOPB  
LM317SX/NOPB  
7.5  
7.5  
10.5  
DDPAK/  
TO-263  
10.75 14.85  
16.0  
Pack Materials-Page 1  
PACKAGE MATERIALS INFORMATION  
www.ti.com  
29-May-2013  
*All dimensions are nominal  
Device  
Package Type Package Drawing Pins  
SPQ  
Length (mm) Width (mm) Height (mm)  
LM317AEMP  
LM317AEMP/NOPB  
LM317AEMPX  
SOT-223  
SOT-223  
SOT-223  
SOT-223  
TO-252  
DCY  
DCY  
DCY  
DCY  
NDP  
NDP  
DCY  
DCY  
DCY  
NDP  
KTT  
4
4
4
4
3
3
4
4
4
3
3
1000  
1000  
2000  
2000  
2500  
2500  
1000  
1000  
2000  
2500  
500  
367.0  
367.0  
367.0  
367.0  
367.0  
367.0  
367.0  
367.0  
367.0  
367.0  
367.0  
367.0  
367.0  
367.0  
367.0  
367.0  
367.0  
367.0  
367.0  
367.0  
367.0  
367.0  
35.0  
35.0  
35.0  
35.0  
35.0  
38.0  
35.0  
35.0  
35.0  
38.0  
45.0  
LM317AEMPX/NOPB  
LM317AMDTX  
LM317AMDTX/NOPB  
LM317EMP  
TO-252  
SOT-223  
SOT-223  
SOT-223  
TO-252  
LM317EMP/NOPB  
LM317EMPX/NOPB  
LM317MDTX/NOPB  
LM317SX/NOPB  
DDPAK/TO-263  
Pack Materials-Page 2  
MECHANICAL DATA  
NDT0003A  
H03A (Rev D)  
www.ti.com  
MECHANICAL DATA  
NDS0002A  
www.ti.com  
MECHANICAL DATA  
NDE0003B  
www.ti.com  
MECHANICAL DATA  
NDG0003F  
T03F (Rev B)  
www.ti.com  
MECHANICAL DATA  
NDP0003B  
TD03B (Rev F)  
www.ti.com  
MECHANICAL DATA  
MPDS094A – APRIL 2001 – REVISED JUNE 2002  
DCY (R-PDSO-G4)  
PLASTIC SMALL-OUTLINE  
6,70 (0.264)  
6,30 (0.248)  
3,10 (0.122)  
2,90 (0.114)  
4
0,10 (0.004)  
M
3,70 (0.146)  
3,30 (0.130)  
7,30 (0.287)  
6,70 (0.264)  
Gauge Plane  
1
2
3
0,25 (0.010)  
0,84 (0.033)  
0,66 (0.026)  
0°–10°  
2,30 (0.091)  
0,10 (0.004)  
M
4,60 (0.181)  
0,75 (0.030) MIN  
1,70 (0.067)  
1,50 (0.059)  
1,80 (0.071) MAX  
0,35 (0.014)  
0,23 (0.009)  
Seating Plane  
0,08 (0.003)  
0,10 (0.0040)  
0,02 (0.0008)  
4202506/B 06/2002  
NOTES: A. All linear dimensions are in millimeters (inches).  
B. This drawing is subject to change without notice.  
C. Body dimensions do not include mold flash or protrusion.  
D. Falls within JEDEC TO-261 Variation AA.  
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
MECHANICAL DATA  
KTT0003B  
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